Agent skill · software engineering · jeremylongshore
clerk-core-workflow-a
Implement user sign-up and sign-in flows with Clerk.
Why this skill is useful
Provides specific implementation patterns and components for integrating Clerk authentication flows that the AI wouldn't reliably generate on its own.
What it needs
Requires clerk installed locally. About 5k tokens when loaded. Last updated 2026-08-07. 2,604 stars on the source repository.
What this skill does
Clerk Core Workflow A: Sign-Up & Sign-In Overview Implement authentication flows with Clerk: pre-built components for rapid setup, custom forms for full UI control, OAuth social login, email/phone verification, and multi-factor authentication. Prerequisites Clerk SDK installed and configured (clerk-install-auth completed) OAuth providers enabled in Dashboard > User & Authentication > Social Connections Sign-in/sign-up environment variables set Instructions Step 1: Pre-Built Components (Quick Start) Step 2: Custom Sign-In Form (Full UI Control) Step 3: OAuth Social Login Step 4: Custom Sign-Up with Email Verification Step 5: Multi-Factor Authentication (TOTP) Error Handling Error Cause Solution ------- ------- ---------- formidentifiernotfound Email not registered Show sign-up link or check Clerk instance formpasswordincorrect Wrong password Display error, offer password reset link sessionexists Already signed in Redirect to dashboard verificationfailed Wrong or expired code Allow retry; offer "Resend code" button oauthcallbackerror OAuth misconfigured Check redirect URIs in Dashboard > Social Connections identifieralreadysignedin Multi-session not enabled Enable multi-session or redirect to dashboard Enterprise Considerations Customize component appearance with Clerk's appearance prop or custom CSS -- matches your design system without building from scratch For Enterprise SSO (SAML/OIDC), users authenticate through their IdP; the <SignIn> component handles the redirect automatically Phone number verification uses phonecode strategy instead of emailcode Magic link sign-in uses emaillink strategy for passwordless auth Track sign-up conversion rates by subscribing to user.created webhooks MFA enrollment is managed via <UserProfile /> component or user.createTOTP() API Resources Sign-In Component Custom Sign-In Flow OAuth Configuration MFA Guide Next Steps Proceed to clerk-core-workflow-b for session management and middleware. …
How to use it
Reference it in AdaL, Claude Code, Cursor or any coding agent — nothing to install:
@skills jeremylongshore/clerk-core-workflow-a